If when you try to send a file like, you receive Blocked for security reasons message, then this post will show you how to send them. Bear in mind that Gmail does not support file formats such as ...

You can send a zip file in Gmail if you want to send a large file to someone without using Google Drive.

I have a dump of contacts from a different program, it started life as an Excel (old 2003 format xls) file. I need to massage this data to work in modern mail programs, the eventual target is ...